Android: add support for cloned output
At some point during the 0.9 cycle, a new control interface was introduced that appears on the main device screen This interface (without any video output) is always shown on the primary screen, while the video is played on a secondary screen (HDMI port in my case).
I propose adding an option to make available the output cloned again that was used prior to 0.9.0. This option should, however, not be enabled by default.